Appalling service

I'm appalled by the service I got at Ackermans. I went in yesterday around 11:37 to purchase a Dstv decoder including installation which I was told to write down my details in (a piece of paper) so they can give them to the installer, I was told the installer would come before the end of day yesterday and no he never pitched. I took time today to go and find out exactly why the installer never came.. I was then told by the manager that they lost the paper that had my details and that I should give them again so they can send the guy today. Can you imagen the nerve.. We'll I'm still waiting on them even now, they are now ignoring my calls.